NOD32 on server KILLS ActiveSync

I have a MS Small Business Server 2003 with SP 1 and Exchange Server running SP 2. On 1/8/2005 apparently an update was sent out that killed ActiveSync on Exchange. After around 12 hours on the phone with product support we decided to disable NOD32. To our surprise, ActiveSync worked fine. Reenabling it immediately killed activesync. I then just disabled IMON. Activesync worked fine. The sync from the client is using ActiveSync 4.1 and the phone is a K-JAM with Windows Mobile 5. Note that we are not running ActiveSync on the server, but using the ActiveSync features of Exchange SP 2 for push email.

Any thoughts on this is appreciated. I want IMON running again to protect the system.

Activesync is possibly not compatible with IMON on a server, which IMON by default would normally be not loaded on a server (grey icon, not red) although at workstation level I have no issue with compatability.
During the install process on a server, NOD32 makes it adequately clear that it is disabled on a server operating system by default.
HTH